fits model: Fatboy. year: 2005–2017.

( Brand: Kibblewhite ), ( Manufacturer Part Number: 0WUCDRX39Z ), ( Type: Valve Spring Kit ), ( Item Weight: 1.2500 ), ( Material: Stainless Steel ), ( Make: Harley-davidson ), ( Length: 4.800 ), ( Skuid: 0wucdrx39z-553-0 ), ( Spring Seat Pressure: 178 Lb ), ( Spring Open Pressure: 371 Lb ), ( Spring Lift: 0.660 )
The K&N Performance Products KMPI Intake Exhaust Valve Spring Kit is an essential upgrade for Harley-Davidson Fat Boy models from 2005 to 2017. This kit includes everything needed to replace the factory valve springs with high-performance K&N units, designed to provide improved performance and longevity.
The KMPI Intake Exhaust Valve Spring Kit comes with six 660-inch lift springs, specifically engineered for Harley-Davidson engines. These high-tensile steel springs are more robust than the original factory springs, allowing for increased valve lift and improved engine breathing. This results in improved combustion efficiency, which can lead to increased power and torque, as well as smoother performance throughout the RPM range.
The kit also includes high-quality seals that help to keep debris and engine gases out of the valve train. These seals are designed to fit perfectly within the intake and exhaust ports, ensuring a tight seal and minimal leakage. This can lead to improved engine efficiency and reduced maintenance requirements, as debris and gases are less likely to enter the engine.
Installing the K&N Performance Products KMPI Intake Exhaust Valve Spring Kit is relatively straightforward, with clear instructions included in the box. However, it is recommended to have some mechanical experience or to consult with a professional mechanic to ensure the installation is done correctly.
Overall, the K&N Performance Products KMPI Intake Exhaust Valve Spring Kit is an excellent upgrade for Harley-Davidson Fat Boy models. It provides improved performance, increased power and torque, and improved engine efficiency, while also reducing maintenance requirements. With its high-quality springs and seals, this kit is a solid investment for any Harley-Davidson enthusiast looking to get the most out of their engine.
Pros of buying K&N Performance Intake Exhaust Valve Spring Kit (660in lift) for Fatboy (2005-2017):1. Increased Performance: The kit provides a 660-inch lift, which can improve engine performance by enhancing airflow into the engine. This can result in increased horsepower and torque.
2. Improved Engine Response: The increased lift and improved airflow can also result in quicker engine response, making the bike more responsive to acceleration.
3. Durable Materials: K&N uses high-quality materials in their products, and this kit is no exception. The springs are designed to be durable and long-lasting, which can save you money in the long run.
Cons of buying K&N Performance Intake Exhaust Valve Spring Kit (660in lift) for Fatboy (2005-2017):1. Potential Engine Noise: The increased lift can sometimes result in more engine noise, which may not be desirable for all riders.
2. Installation Difficulty: The installation of this kit can be complex, and it may require specialized tools and knowledge. It is recommended to have the installation done by a professional mechanic.
3. Cost: While the kit can improve performance, it is not cheap. The cost may be a deterrent for some budget-conscious riders.
Conclusion:If you are looking to improve the performance of your Fatboy (2005-2017) and are willing to invest in a high-quality kit, the K&N Performance Intake Exhaust Valve Spring Kit (660in lift) could be a good option for you. However, it is important to consider the potential downsides, such as the potential for increased engine noise and the complexity of installation, before making a decision.
Recommendation:If you are considering purchasing this kit, it is recommended to have it installed by a professional mechanic to ensure that it is installed correctly and to avoid any potential damage to your engine. Additionally, it is important to research the kit thoroughly to ensure that it is compatible with your motorcycle and that it will provide the performance improvements that you are looking for.
KPMI valve springs are heat-treated, stress relieved, and shot-preened to ensure maximum performance and life. Springs are engineered for each specific application using proprietary advanced spring design simulation, and analysis software.